Figure 3: J2: distributions of the zeros 𝜂𝑘(ℓ,𝑛),𝜂𝑗(ℓ,𝑛) (♦), 𝜉𝑘(ℓ) (○), and 𝜉𝑘(ℓ) (■) for the J2 Jacobi polynomials, with 𝑔=3,ℎ=4, and ℓ=3. The three diagrams correspond to 𝑛=1(a), 2(b), and 5(c), respectively. The ordinary zeros 𝜂𝑗(ℓ,𝑛) lie in (−1,1).